Spring-wheel.



G. W. HAM. SPRING WHEEL.

APPLICATION FILED APR. 1, 1912.

1,055,742. Patented Mar. 11,1913. I

Inventor.

q Attorneys CHARLES W. HAM, 0F MEMPHIS, TENNESSEE.

SPRING-WHEEL.

Specification of Letters Patent.

Patented Mar. 11, 1913.

Application filed April 1, 1912. Serial No. 687,679.

To all whom it may concern:

Be 1t known that I, CHARLES IV. HAM, a

citizen of the United States, residing at Memphis, in the county ofShelby and State of Tennessee, have invented a new and usefulSpring-Vheel, of which the following is a specification.

One object of the present invention is to provide a series of primaryand secondary spring spokes of novel and improved form adapted tocooperate in a novel manner with the hub and with each other to form aresilient support for the rim.

A further object of the invention is to provide anovel form of rim foruse in a wheel of the character hereinafter described.

\Vith the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of invention herein disclosed can be made within the scope ofwhat is claimed without departing from the spirit of the invention.

In the accompanying drawings,-Figure 1 shows in sideelevation, a wheelconstructed in accordance-with the present invention; Fig. 2 is asection upon the line .22 of Fig. 1; Fig. 3 is an elevation of one ofthe primary spokes; and Fig. 4 is an elevation of the hub.

In carrying out the invention there is provided a hub 1 provided withflanges 2, there being oppositely disposed, flat hearing areas 3 uponthe hub 1 between the flanges 2.

The invention further includes a pair of resilient primary spokesdenoted generally by the numeral at. Each resilient primary spoke 4includes a fiat intermediate portion 9 and oppositely extended ullTlSSwhich are curved in opposite directions.

The invention further includes a pair of arched secondary s pokes 5,each spoke 5 comprising a straigh. intermediate portion 7 and arms 6which are curved in a common direction.

All of the arms of the several spokes ter minate in eyes 11, whereby theextremities of the arms of the spokes are assembled with.

the rim in a manner hereinafter to be described. The intermediateportions 9 of the primary spokes 4- are applied to the flat bearingareas3 of the hub 1, and the straight intermediate portions 7 of thesecondary spokes 5 are applied to the straight int-ermediate portions 9of the primary spokes, as will be clearly understood, from an inspectionof Fig. 1. Retaining element-s, preferably taking the form of bolt andnut'structures 10 are extended through the hub 1 into the intermediateportions 9 and 7 of the spokes, to hold the spokes assembled with thehub. f

The rim of-the wheel is a composite strucvided with inwardly extendedears 12 be tween which the eyes 11 of the spokes register, pivotelements 15 being passed through the eyes 11 and through. the ears 12.In the tread of the casing 14:, a concaved seat 16 is formed, and in theseat 16 registers a double convexed tire 17 which ispreferablyfashioned' from rubber. Owing to the concavity of the seat16and owing to the convexity of the tire 17, a lateral movement of thetire 17 llPOl'l the casing 14 will be avoided. Fur thermore, owing tothe construction above outlined, the circular transverse contour of therim is maintained. The-interior of the casing 14 is packed with afilling 18 which is preferably fashioned from paper pulp.

It will be seen that the construction of the wheel is such that thespokes 1 and 5 ture and comprises a tubular casing 14: promay beassembled readily with the hub 1.

strength at the hub is provided, the wheel having, beyond the hub, thedesired resiliency. The arms 8 of the primary spokes 4: extend away fromthe hub in approximate alinement, and the arms 6 of the secondary spokes5 extend away from the hub in approximate parallelism. Owing to the factthat the secondary spokes 5 are of arched form and are assembled withthe intermediate portions of the primary spokes land with the hub 1, thesecondary spokes 5 serve :0 receive a portion of the weight, when the-wheel is positioned as shown in Fig. 1, thereby equalizing the strainupon the wheel and distributing the resiliency thereof. Thedevice hereindisclosed is of few parts.-and

the construction is such that the Wheel may be set up and knocked downwith a. minimum amount of labor.

Having thus described the invention, what is claimed is 1. A Wheelcomprising a. hub; resilient primary spokes having their intermediateportions applied to opposite faces of the hub, the primary spokesterminating in arms projecting in opposite directions beyond thev hub;secondary resilient spokes of arched form and comprising intermediateportions, and arms projecting in a common direction from the hub, theintermediate portions of the secondary spokes being applied to theintermediate portions of the primary spokes; means for securing theintermediate portions of both sets of spokes to the hub; and a rimcarried by the spokes.

2. A Wheel comprising a hub; resilient primary spokes having straightintermediate portions applied to opposite faces of the hub, each spoketerminating in arms projecting in opposite directions beyond the hub andcurved in opposite directions; secondary resilient spokes of arched formand comprising straight intermediate portions and curved arms projectingin a common direction from the hub and curved in a common direction theintermediate portions of I spokes; means for connecting the secondaryspokes being appiied to the interi'nediate portions of the primary theintermediate portions oi. both sets of spokes with the hub; and a rimcarried by the outer ends of the spokes. i

3. A wheel comprising a hub; resilient primary spokes having theirintermediate portions applied to opposite faces of the hub, the primaryspokes termimtingin'arms projecting in opposite direetioni' oeyond thehub and curved in opposite directions; seq ondary resilient spokes ofarched form and comprising intermediate portions and arms projecting ina common direction from the hub, the arms being" curved a CUTHHIODdirection, the intermediate poriom of the secondary spokes being appliedto the intcrmediate portions of the primary spokes; means for securingthe intermediate poi tions of both sets of spokes to the hub; and a rimcarried by the spokes.

' In testimony that I claim the foregoing as myown, I have heretoaffixed my signature in the presence of two Witnesses CHARLES W. HAM.

Witnesses:

H. C. BAILEY, HARRY J. Frrzonnann.

